Drummondia marlo, Lowry & Stoddart, 2012

Lowry, J. K. & Stoddart, H. E., 2012, The Pachynidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) 3246, Zootaxa 3246 (1), pp. 1-69: 13-14

publication ID

http://doi.org/ 10.11646/zootaxa.3246.1.1

DOI

http://doi.org/10.5281/zenodo.5251182

persistent identifier

http://treatment.plazi.org/id/456087D3-3629-FF84-B8DF-0F5DFD6B4FF7

treatment provided by

Felipe

scientific name

Drummondia marlo
status

sp. nov.

Drummondia marlo   sp. nov.

( Figs 7 View FIGURE 7 , 8 View FIGURE 8 )

Type material. HOLOTYPE, sex not known, 4.4 mm, MV J17534 View Materials , 33 km south-south-west of Marlo , Bass Strait, Victoria, Australia, 38°04'S 148°25.7'E, 28 m, sand and shell, Smith-McIntyre grab, 12 August 1989, G. Parry, stn MSL-EG 16. GoogleMaps  

Etymology. The specific name is a reference to the type locality; used as a noun in apposition.

Diagnostic description. Head lateral cephalic lobe large, broadly rounded; ventral margin curved. Antenna 1 peduncular article 1 with posterodistal spine; accessory flagellum 2-articulate, article 1 short; flagellum with strong 1-field callynophore in specimen of unknown sex. Mandible [lacinia mobilis not known]; [left accessory setal row not known], right modified into lamina dentata; molar absent; [palp attachment not known]; palp article 2 broad, longer than article 3; article 3 with subparallel margins. Maxilla 1 outer plate with 11 setal-teeth in 7/4 arrangement, some outer row setal-teeth with lateral and medial cusps; palp absent. Maxilliped inner plate small; outer plate large; palp 4-articulate, article 4 large. Gnathopod 1 chelate; ischium smaller than propodus, not swollen posteroproximally; carpus extremely compressed; propodus length about 1.8 × breadth, posterior margin well developed, palm with produced corner, corner of palm with complex robust seta; dactylus reaching to corner of palm. Gnathopod 2 palm minute, obtuse. Pereonite 4 without dorsal spines. Pereonite 5 with 1 dorsal spine. Pereopod 5 merus without posteroproximal shoulder. Pereopod 6 basis with posteroventral lobe weakly produced; merus longer than broad, with posteroproximal shoulder. Pereopod 7 basis subovate with posterior margin weakly dentate. Epimeron 3 posterior margin without projections, posteroventral corner broadly rounded. Uropod 3 biramous, inner ramus extending less than halfway along outer ramus. Telson   as long as broad, entire.

Remarks. Unfortunately the left mandible of the only specimen of this species is lost. Drummondia marlo   is most similar to D. corinellae   , its geographical near-neighbour. The species differ in the shape of the head lobe, the relative length of gnathopod 1 propodus and the shape of coxa 5.

Distribution. Bass Strait, Australia; 28 m depth.

MV

University of Montana Museum